Alert archive / Florida / Tornado Warnings in 2020

Tornado Warning 58, NWS Mobile, AL

September 16, 2020Santa Rosa County, Florida

NWS Mobile, AL issued this tornado warning at Sep 16, 2020, 2:59 AM CDT for Santa Rosa County, Florida. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 16, 2020, 2:59 AM CDT (07:59 UTC)
Expired
Sep 16, 2020, 3:30 AM CDT
In force
31 min
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Santa Rosa County, FL

The radar

The Eglin Afb radar (KEVX), 99 km from the middle of the area, began a volume at 08:00 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Sep 15, 5:48 PM CDTTornado WatchSPC12 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 8.0 hours before the alert went out and 256 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Tallahassee Rgnl, FL at 00:00Z on 2020-09-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 929 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 00:00Z on 2020-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 181 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
929 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
520 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
181 m²/s²
0-3 km storm-relative helicity
228 m²/s²
Significant tornado parameter
0.7
Supercell composite
6.1

Open this sounding in Storm Lab

The text

As transmitted.

626 
WFUS54 KMOB 160759
TORMOB
FLC113-160830-
/O.NEW.KMOB.TO.W.0058.200916T0759Z-200916T0830Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Mobile AL
259 AM CDT Wed Sep 16 2020

The National Weather Service in Mobile has issued a

* Tornado Warning for...
  Northeastern Santa Rosa County in northwestern Florida...

* Until 330 AM CDT.
    
* At 258 AM CDT, a severe thunderstorm capable of producing a tornado
  was located 10 miles east of Roeville, or 12 miles east of Bagdad,
  moving northwest at 60 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This tornadic thunderstorm will remain over mainly rural areas of
  northeastern Santa Rosa County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3056 8682 3086 8718 3094 8713 3095 8705
      3068 8679 3058 8680
TIME...MOT...LOC 0758Z 140DEG 53KT 3062 8683 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Black
2 follow-up statements
962 
WWUS54 KMOB 160814
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
314 AM CDT Wed Sep 16 2020

FLC113-160830-
/O.CON.KMOB.TO.W.0058.000000T0000Z-200916T0830Z/
Santa Rosa FL-
314 AM CDT Wed Sep 16 2020

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 AM CDT FOR
NORTHEASTERN SANTA ROSA COUNTY...
    
At 314 AM CDT, a severe thunderstorm capable of producing a tornado
was located 11 miles east of Roeville, or 13 miles east of Bagdad,
moving northwest at 55 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
northeastern Santa Rosa County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3056 8682 3086 8718 3094 8713 3095 8705
      3068 8679 3058 8680
TIME...MOT...LOC 0814Z 138DEG 49KT 3062 8681 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Black
719 
WWUS54 KMOB 160821
SVSMOB

Severe Weather Statement
National Weather Service Mobile AL
321 AM CDT Wed Sep 16 2020

FLC113-160831-
/O.EXP.KMOB.TO.W.0058.000000T0000Z-200916T0830Z/
Santa Rosa FL-
321 AM CDT Wed Sep 16 2020

...THE TORNADO WARNING FOR NORTHEASTERN SANTA ROSA COUNTY WILL EXPIRE
AT 330 AM CDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until 600 AM CDT for northwestern
Florida.

LAT...LON 3056 8682 3086 8718 3094 8713 3095 8705
      3068 8679 3058 8680
TIME...MOT...LOC 0821Z 140DEG 53KT 3068 8687 

$$

Black

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 15, 9:54 PM CDTAreal Flood AdvisoryMOBEscambia, Okaloosa, Santa Rosa6 hr
Sep 15, 10:53 PM CDTRiver Flood WarningMOBOkaloosa, Santa Rosa5 days
Sep 15, 11:00 PM CDTFlash Flood Warning Considerable damage threatMOBEscambia, Okaloosa, Santa Rosa8 hr
Sep 15, 11:36 PM CDTTornado WarningMOBEscambia, Santa Rosa28 min
Sep 16, 1:03 AM CDTFlash Flood Warning EmergencyCatastrophic damage threatMOBEscambia6 hr
Sep 16, 3:42 AM CDTTornado WarningMOBSanta Rosa15 min
Sep 16, 3:44 AM CDTTornado WarningMOBOkaloosa16 min
Sep 16, 3:45 AM CDTFlash Flood Warning EmergencyCatastrophic damage threatMOBOkaloosa, Santa Rosa8 hr
Sep 16, 3:58 AM CDTFlash Flood WarningMOBEscambia6 hr
Sep 16, 4:00 AM CDTTornado WarningMOBOkaloosa15 min
Sep 16, 5:00 AM CDTFlash Flood WarningMOBEscambia, Okaloosa, Santa Rosa10 hr
Sep 16, 9:33 AM CDTFlash Flood Warning EmergencyCatastrophic damage threatMOBEscambia, Okaloosa, Santa Rosa8 hr
Sep 16, 9:49 AM CDTFlash Flood Warning Considerable damage threatMOBEscambia9 hr
Sep 16, 1:21 PM CDTCoastal Flood AdvisoryMOBEscambia, Okaloosa, Santa Rosa15 hr
Sep 16, 1:21 PM CDTHigh Surf AdvisoryMOBEscambia, Okaloosa, Santa Rosa15 hr
Sep 16, 1:35 PM CDTWind AdvisoryMOBEscambia, Okaloosa, Santa Rosa10 hr
Sep 16, 2:26 PM CDTAreal Flood WarningMOBEscambia, Okaloosa, Santa Rosa12 hr

Nearby

Tornado Warnings in Florida, 2020Every tornado warning in 2020Tornadoes in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.